Lathe tool



Aug-"28,1923, 1,466,265 M. M. BALSAM v mums: TOOL Filed Aug. 19. 1921 I7 of this specification and show Patented Aug. 28, 19233.

-- nu rsnsn MAURICE M. BALsAmon BROOKLYN, NEWYOBK;

LATHE TooL; j

Application an August 19, 1921. Serial No. 493,569,:

To all Quiz-omit may concermf a f Beit known that Lhiliinnron M. BA sAM,

a citizen of the United States, residing'in the city o1 New York, borouh ot'B'rooklyn, in

the county of Kings and state of New York,

have invented a certain new and useful Improvement in. Lathe Tools,.o'fwh chthe following 1s a specification,

The inventionrelates to tool holders adapt- I ed to be mounted onslide-rests of lathes, and

the main object of the invention is to provide a removable'carrierequipp'ed with a plurality ot' lathetools, adapted to be readily secured to a slide-rest in place of the usual tool-post and arrangedto permit the presentation of either of the tools to the work. i V

Afurther object is to provide means for clamping such tools securely inthe carrier, and for maintaining the tools in position for effectiveservice. 7 V v Another object is to provide an automatic stop serving asa gauge by which the presented tool will be located in proper relation.to the work, and supported close to the cutting edge during the cuttingoperation,

A further important object'is to provide means whereby the tool carriermay be easily and securely clamped to the slide-rest to-present theselected tool properly, such means being additional to such automaticstop, and

another object is to provide meansifor taking 7 up the slack due to wearin the members of such clamping means,

l The invention consists in certain novel features of construction andarrangement by which the above and other objects are attained, to behereinafter described and claimed. 7 o

The accompanying drawings form a part anapproved "form of the invention.I 1' Figure 1 is a' face view of the carrier, equipped with severaltools arranged to be presented to the work as require J Figure 2 is acorresponding side elevation. Figure 3 is an elevation of the rear faceof the same. i

Figure 4 is a section taken on the line" w-m in Figure 3. V

Figure 5 1s a Figure 3.

Figure 6 is an elevation showing a portion plan view corresponding to oftheside'of thecarrier opposite to Figure 2. g

Figure 7 is face of the clamping bolt. Y v.

Figure?) is an elevation of such bolt,

V '65" 11 end view showing the outer Figure 9 is'an'end vie of the bolt,showingthe innerfliace; 1 v H i FigurelO is an end view of one of thetool holders. v

' Figure 11 is a corres o-nding side elevas tron. v

Similar reference numerals indicate the same partsin all the figures. i

Referring to the drawings, the :base

of an angular bracket having a vertical portion 2 and an aperture? forthe reception of a heavy bolt, not, shown, by whichthe bracket 'Inay-besecured to the slide-rest of a lathe, notrepresented but which may be ofany approvedftype.

The bracket 2 is bored at 4; to receive the it shank 5 of a clampingbolt 6' extending therethrough, and the bracket has a flange 7 locatedannularly' to the clampingbolt, ex-

tending around'the upperpart of the bracket and terminating at the basel at eachside. The inner face of the flange/7 tapers jinwardly' as at'-8. I I I Held by the head Qofthe clamping bolt- 6, is'a verticallymounted circular disk lO'having a central opening receiving the mainportion of. the'bolt-he ad 9, Which is rebated annularly to receive acorresponding annular shoulder 11 on such head. "The bolt is heldagainst revolving in the bracket 2 by a screw 12 extending through thebracket fromv the rear with} its point engaged-Vin one of thealnnularly'located'recesses l3 bored in the inner face of the head; v p

On the rear face of the disk isla tapered circular'boss 14 matching theflange '7 and surrounded by an annular'groove 15 receiving the lip ofthe flangeJThe protruding 7 end of the shank 5 is threaded andQisreceived in'a nut 17 hearing againsttherear faceof the bracket andformed on the end of a lever 18 by which the bolt may bedrawn stronglyrearward throwing the lever 18 through as'hortarc. hrown in the.opposite direction the boltis loosened and the disk; '10,'may be rotatedon the bolt, and when the lever is thrownin the direction to tighten thebolt, the latter the channel, at 23, froin' the H 20, so that,

the pressure induced drawing head 19'into the tapered socket by theaction entatio.n of the tool to the work 1,,

rebate in the disk, draws the boss 1% into i strong frictional contactwith the tapered flange 7 andliolds the disk against rotary movement. VP V :The disk 1s provided with a series of tapered sockets each adaptedto receive a tool holder in which a tool is mounted-and Each toolholdcifl coi'ii- 7 labor. The lILV Qlltl'OB OfiBl'S the auvanta espresented radially. prises a conical head lghaying' a screw- -threadedshank extending through the disk and equipped Witha nut 21 by which thecorneal liea'dImay be drawn into its socket. A; channel 22 extending;dunner 1- cally across theliead 19 receives the col, and

the holder is split or slitted parallel with I Lannel nearly to the-endof the shank the conical ofthe nut'21, contracts the channel and theto'ol'ther'ein is strongly gripped.

In order to hold the. tool holder positively a ainst rotation and insurethe pro to the axial line, or the latter, eac

provided with an arm 24%, preitrahly in tegral therewith, proyect n'glaterally there fro-in on one side andf adapted to be acted upon theinner fa'ce' of the head of a screw 25 set radially in a rec'e 26in theperiphery of he disk and. so locatedfas to re'ist the tendency of thehad to rotate in t disk due, to the action of the tool in making itscut. 'Thescrew 25 also serves as, an adjusting means for pres nting thecutting edge 1 spn 1;

0t thetobl at the desired angle to the v ork. The d sk is shown asequipped with eight holders and carrying" a cutting-on tool 27y aformihgtoolQS, cuties 29, 30 and 31, and knurllng tool32; The numberv ofholders may bejariedwand as the holders areinter j changeable in theirsockets the: tools maybe located as desired relatively to each other theholders may be shaped to receive tools of any desired type.

7 On the rear face, of the disk 10 the proshanks 20 ofthe tool holdersrest succe siyely upon a dog 33 whe'nin position for's'eiwlice and arethu'sdirectly supported. close to the; work while makinga cut. The dog33 ,is ,pivotally nioiinted onthe base 1 oi" thei b cket and ishheldyieldingly prese tdin the am ofthe'shanks 20 by a A yng beneath a handle35 by 11c'h the doglm'a'y be retracted out of the path;

iieieiwis is swung to free the I v1O the lattermay bearotated,clockvwlseiinFig'ure, 1 ,to'pieslent either tool to the I Q. the;shank-ends passingrl idly past the amuse desired tool is presented; theshank-end of such 'tool is then engaged by the dog against held inthetlath'e;

a reverse movement and the lever 18 swung the slide-rest as usual andthe'fout is made. A succeeding tool is then presented by sirhi larmanipulations, and it the tools 'arcarranged on the disk-in thegorder inwhich they thus effecting a great saving in time and of a turretreino'vably mounted on/a slide rest. and capable OI" working ye'ry closeto the chuck in which the piece tote ti ated is to grip the disk to thebracket. The whole is then fed forward on '70 areto he used, each will'followtheother When through longiise the clampingbolt 6' audits seatsin the disk and bracket bsc-omsworsro adegree requiring a longer throwof the lever 18, to the right in Figure 1 8,-to effect the clampingtha'nf is permitted:

by the base 1 of the bracket, the screw is withdrawn to disengagelil-S'POlIllJ from its recess 13, and the clamp ng; bolt Gturncd backtopresent a new recess13 andthe screw 1. The lathe tool describechcoinprising a o f tapered'sockets therein, a, series of tool holders,each mounted in one of said soci-rets' and hayinga split co'nicalheadrnatchitj therein and an armextending laterally vf om said head, asha-nkon said head erzti through said disk, anut on said. sli'zliitzlar-irangedto draw said head into said socket to compressand hold a toolcarried in said disk rotably mounted and ha ing a series comprising a .7

iii)

head, a nut on said bolt arranged to, coast 7 with said bracket andholdsaid disk inc; tlonally against rotation, said head having,

recesses therein, and a screw extending through said bracket and engagedin one or said recesses'to hold said bolt againstrotation. v V p i Intestimony that I claim the invention above set forthl'afiix mysignature, in presence of two witnesses. V H p MAURICE M. BALSAM.

Witnesses: 4 I JHZVANNL:

' Cir/Alicia's R. swam.

